I'm Karl Dreyer Jr., a senior software developer and engineer — from legacy systems to modern .NET, React, and cloud solutions. I'm taking on consulting engagements: custom platforms, legacy modernization, and AI integration, built by the person you talk to.
Senior engineering for businesses that need systems built properly — and kept running. No hand-offs to junior teams. You work with the engineer who builds it.
I started on mainframes and legacy systems. I understand the systems you're running — and how to bring them forward without breaking the business that depends on them.
Internal systems that replace spreadsheets, email chains, and workarounds — dashboards, live operational data, and deployment to the people who need it.
Practical AI inside real products: conversational agents, workflow assistance, and in-app guidance — the same kind of agent work behind NeXtrade's Desk Agent.
One codebase, every device: installable web apps and native mobile builds for phones, tablets, and the stores.
I've spent three decades building production systems — from mainframe operations to an autonomous trading platform I built myself. Here's how I work, and why it matters.
Every engagement is led by the engineer who designed the system. Questions get answers from the person who wrote the code, not a ticket queue.
I build systems meant to run for years — auditable, dependable, and plain about their status. If it can't be operated, it isn't finished.
From legacy systems on mainframes to autonomous AI-assisted trading — few engineers can modernize a legacy operation and build its future in the same engagement. I can.
NeXtrade is the autonomous trading desk I built and run: configure your algorithms and risk rules, press Power, and it trades stocks and crypto on your behalf through your own Alpaca account — Paper or Live. It's the best proof of how I build: a real product, operated daily, with safety nets first.
No sales layer, no surprises. Four steps, and you'll know where you stand at each one.
A direct conversation about the problem, your constraints, and what success looks like. No sales layer.
A written scope with fixed deliverables and a price you can plan around — before any code is written.
Iterative delivery you can see and use as it comes together, with the engineer one message away.
Deployment, hardening, and support. Systems meant to be operated, not just demoed.
Tell me what you're trying to run, replace, or modernize. You'll hear back from me personally — with honest next steps, not a sales pitch.
Email Karl karl@karldreyerjr.com